My budgies are panting and opening beaks. Are they too hot? What to do?

It would be hard to say without more context. Baby birds can click their beaks together if they're begging mom or dad for food. They may also just open their mouths to yawn and stretch. If the mouth is staying open and they are panting, it can indicate stress or overheating. If the babies are otherwise acting healthy it may just be normal behavior, however if you see any signs of illness such as lethargy, puffed feathers, refusing to eat, etc, then having them looked at by a vet is best.

Respiratory distress can be caused by a number of things including stress, overheating, or even an underlying illness. If something stressed Romeo out, moving him to a quiet room where he can calm down is a good first step. Making sure he isn't too hot or too cold and the room is well-ventilated, along with providing a bath can also help if he is too warm or overheating. If he continues to be in distress with open-mouthed breathing and doesn't settle down, or you see other signs of illness, seeking veterinary care ASAP is best.

I'm sorry to hear Jimmy isn't feeling well. Heavy panting, difficulty breathing, or gasping for air are all serious symptoms and very concerning. It would be best to seek veterinary care ASAP especially if he is having difficulty breathing. Moving him to someplace cool and shaded as well as kept quiet and dark may help if the panting is caused by heat or stress, however if he continues to pant, seeking care is needed.

Without more info it is hard to say. Holding the wings away from the body can sometimes be a sign of stress or illness, or can be part of heat regulation if your budgie is kept in a very warm area. Making sure she is cool, in a shaded area, and has access to food and water may help if she is feeling stressed. If she does show signs of illness, doesn't improve with the changes, or just doesn't seem right, a veterinary exam in person is best.

If you just got him today he is likely very frightened, and if he's flying around that will tire him out and make him pant/exhausted. I would keep his cage in a quiet, low traffic area and give him some alone time for a day in order to settle in and be able to relax.

Panting can sometimes be a sign of heat exhaustion or extreme distress in birds. If moving your bird to a calm, quiet and cool cage does not resolve the panting, or your bird is having trouble breathing it is best to seek emergency medical care from a local veterinarian ASAP. Keeping him in a cool, dark, quiet room may help him recover, but if his symptoms don't improve care is needed.

Panting alone doesn't point to any particular thing, however if Parrot hasn't been active and is just panting from sitting there, that could indicate an issue with the heart or lungs, or extreme stress or illness. In that case, a vet visit is best to check for the cause and get him treated. If he is panting after activity such as flying around a lot, being chased by a hand, etc, giving him time to rest and relax and return to normal is best--however if he doesn't, vet care is a good idea.